Ernakulam is one of the 14 districts in the Indian state of Kerala, and takes its name from the eponymous city division in Kochi. It is situated in the central part of the state, spans an area of about 2,924 square kilometres (1,129 sq mi), and is home to over 9% of Kerala's population. Its headquarters are located at Kakkanad. The district includes Kochi, also known as the commercial capital of Kerala, which is famous for its ancient churches, Hindu temples, synagogues and mosques. The district includes the largest metropolitan region of the state: Greater Cochin. Ernakulam district yields the highest revenue and the largest number of industries in the state. Ernakulam is the third most populous district in Kerala, after Malappuram and Thiruvananthapuram. The district also hosts the highest number of international and domestic tourists in Kerala state.